syl22-00/pocketsphinx.js

Health v2 · maintenance only

Flags: no_releases no_license

Adoption not part of the score

1508 stars · 262 forks observed · 2026-08-28

What it is AI-extracted, prompt v1, taxonomy v1, 2026-08-30, confidence not recorded

PocketSphinx.js is a speech recognition library that runs entirely in the web browser, built by compiling the PocketSphinx C recognizer to JavaScript/WebAssembly with Emscripten. It includes an audio recorder component based on the Web Audio API and a Web Worker wrapper to keep recognition off the UI thread.

Use cases

• add offline speech recognition to a web page
• recognize voice commands in the browser without a server
• build a keyword spotting web app
• record audio in the browser with the web audio api
• run speech recognition in a web worker
• support chinese speech recognition in the browser

When to choose

• you need fully client-side, offline speech recognition in the browser
• you want keyword spotting without sending audio to a server
• you need a small vocabulary recognizer with no per-request cloud costs

When to avoid

• you need high-accuracy large-vocabulary recognition (modern models like Whisper or cloud APIs are better)
• you need a maintained project - the last release was 2020 and there is no license file
• you need server-side or mobile-native speech recognition

Facets

library · maturity maintenance

speech-recognition audio-processing sdk speech-processing web-development browser wasm pocketsphinx emscripten web-worker keyword-spotting offline-speech-recognition natural-language-processing javascript

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